/*
 * Copyright (C) 2008 Matt Falkoski
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.falko.android.raven.settings;

import android.content.Context;
import android.content.res.TypedArray;
import android.preference.Preference;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.widget.Spinner;

import com.falko.android.raven.R;
import com.falko.android.raven.util.AndroidUtil;

public class SpinnerPreference extends Preference implements OnItemSelectedListener{

	private final String TAG = getClass().getName();
	private String value_;
	private String type_;
	private Spinner spinner_;

	public SpinnerPreference(Context context, AttributeSet attrs) {
		super(context, attrs);
		initPreference(context, attrs);
	}

	public SpinnerPreference(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		initPreference(context, attrs);
	}

	private void initPreference(Context context, AttributeSet attrs) {

		TypedArray a = getContext().obtainStyledAttributes(attrs,
				R.styleable.Spinner);
		type_ = a.getString(R.styleable.Spinner_values);
		a.recycle();
	}

	@Override
	protected View onCreateView(ViewGroup parent) {

		LinearLayout layout = null;

		try {
			LayoutInflater mInflater = (LayoutInflater) getContext()
					.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

			layout = (LinearLayout) mInflater.inflate(
					R.layout.spinner_preference, parent, false);
		} catch (Exception e) {
			Log.e(TAG, "Error creating check box preference", e);
		}

		spinner_ = (Spinner) layout.findViewById(R.id.spinner);
		int id = AndroidUtil.getResId(type_, getContext(), R.array.class);
		ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
				getContext(), id, android.R.layout.simple_spinner_item);
		adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		spinner_.setAdapter(adapter);
		spinner_.setSelection(adapter.getPosition(value_)); 
		spinner_.setOnItemSelectedListener(this);
		return layout;
	}
	
	@Override
	protected Object onGetDefaultValue(TypedArray ta, int index) {

		return ta.getString(index);
	}

	@Override
	protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
		super.onSetInitialValue(restoreValue, defaultValue);
		if (restoreValue) {
			value_ = getPersistedString(value_);
		} else {
			String temp = "";
			temp = defaultValue.toString();
			persistString(temp);
			value_ = temp;
		}
	}

	public void onItemSelected(AdapterView<?> parent, View view, int position,
			long id) {
			
		String temp = spinner_.getItemAtPosition(position).toString();
		if (!callChangeListener(temp)) {
			return;
		}
		value_ = temp;
		persistString(value_);
//		notifyChanged();  //causes infinite loop
	}

	public void onNothingSelected(AdapterView<?> arg0) {
		// not used
		
	}
}
